# Copyright (2023) Beijing Volcano Engine Technology Ltd.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#     http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from abc import ABCMeta, abstractmethod


class DataAccess(metaclass=ABCMeta):
    """
        Base class for data access, define basic interface.

    """

    @abstractmethod
    def execute(self, query, pool_manager):
        pass

    @abstractmethod
    def _convert_to_df(self, res_stream):
        pass
